Huawei S2750 Series Hardware Description page 25

S2750 Series Ethernet Switches
Hardware Description
Attribute
Working mode
Maximum
transmission
distance
1000BASE-X Ethernet Optical Port
A 1000BASE-X Ethernet optical port can send and receive data at only 1000 Mbit/s and cannot
work at 100 Mbit/s.
Table 2-8 Attributes of a 1000BASE-X Ethernet optical Port
Attribute
Connector type
Optical port
attributes
Standards
compliance
Working mode
Combo Port
A combo port consists of an optical Ethernet port and an electrical Ethernet port on the panel.
Each combo port matches only one internal forwarding port. The electrical and optical ports of
a combo port are multiplexed, and only one of them can work at a time. When one of the Ethernet
ports is working, the other port is shut down.
Issue 04 (2014-03-20)
Item
10/100 Mbit/s auto-sensing
Full-duplex
100 m
Table 2-8
Item
LC/PC
Depending on the optical module used (see
Module)
IEEE802.3z
1000 Mbit/s
Full-duplex
NOTE
By default, a combo port works in auto mode, in which the port type is determined as follows:
l If the optical port has no optical module installed and the electrical port has no network cable
connected, the port type depends on which port is connected first. If the electrical port is connected
by a network cable first, the electrical port is used for data switching. If the optical port has an optical
module installed first, the optical port is used for data switching.
l If the electrical port has a network cable connected and is in Up state, the electrical port is still used
for data switching when the optical port has an optical module installed.
l If the optical port, no matter in Up or Down state, has an optical module installed, the optical port is
still used for data switching when the electrical port has a network cable connected.
l
If the optical port has an optical module installed and the electrical port has a network cable connected,
the optical port is used for data switching after the switch restarts.
You can configure a combo port as an electrical or optical port using the combo-port command.
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lists the attributes of a 1000BASE-X Ethernet optical port.
2 Chassis
SFP/eSFP Optical
19